BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > Track / Autocross / Dragstrip > Stud conversions - who is good?

Post Reply
 
Thread Tools Search this Thread
      10-23-2017, 12:54 AM   #1
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Stud conversions - who is good?

See topic.
I'd like to go for a kit that uses M14x1.5mm thread pitch on the nut side instead of our stock 1.25 pitch, because there are more nut options in M14x1.5 (I already own a set of silver and black Gorilla nuts in this size from my Audi). I know these kits exist, but not all of them change thread on the wheel/nut side of the stud.

I don't plan on using spacers, I'm not into stance, so I don't need or want super-long studs. I'd rather order wheels that fit correctly / have correct offset. I was just going to stick with the stock wheels for summer, I'm grabbing a set of 18s for winter, and then depending on how much track work I do, I might find a square track/autox setup but that is still TBD.

Car will see salt so studs need to be weather-resistant.
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      10-30-2017, 12:16 PM   #2
emdeuce
Private First Class
197
Rep
155
Posts

Drives: M2 ZL9 6MT
Join Date: Dec 2014
Location: (626)

iTrader: (0)

Check out Motorsport Hardware. I'm currently running their studs and lug nuts and they've been tried and true on and off track.

The specific kit you'd probably be interested ing:
https://motorsporthardware.com/produ...-14x125-14x15/

Good luck!
__________________
Living Life Turn After Turn!
[/url]
F87 M2 Performance Edition - 2017-current
F15 X5 35d - 2014-2017
E36 M3 - 2009-2016
Appreciate 0
      10-30-2017, 02:14 PM   #3
twin fed
Doc Brown
twin fed's Avatar
1176
Rep
2,174
Posts

Drives: 2016 MG MT M2
Join Date: May 2008
Location: Isle of Long

iTrader: (2)

Quote:
Originally Posted by ZPrime View Post
See topic.
I'd like to go for a kit that uses M14x1.5mm thread pitch on the nut side instead of our stock 1.25 pitch, because there are more nut options in M14x1.5 (I already own a set of silver and black Gorilla nuts in this size from my Audi). I know these kits exist, but not all of them change thread on the wheel/nut side of the stud.

I don't plan on using spacers, I'm not into stance, so I don't need or want super-long studs. I'd rather order wheels that fit correctly / have correct offset. I was just going to stick with the stock wheels for summer, I'm grabbing a set of 18s for winter, and then depending on how much track work I do, I might find a square track/autox setup but that is still TBD.

Car will see salt so studs need to be weather-resistant.
I have this set for sale BNIB that I will give you for a great price. They are 14x1.25 only but they are very strong and Tire Rack uses them on all their cars that they test tires for, even on the track. If you are interested LMK. They are perfect for what you are looking for. They are open ended lug nuts with bull nose studs and come with the installation tool. The only reason I did not use them is that they are a little to short to run larger spacers. But if that is not a concern for you it's ok.



__________________


Appreciate 2
ZPrime610.50
gsrbri559.50
      10-30-2017, 08:20 PM   #4
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
I don't plan to use spacers, but I want something that converts to 14x1.5mm thread pitch because I have two sets of bolts in that size (the duplex chrome and duplex black chrome) already.

So I actually don't want super-long bullet nose studs, because I want to use these closed-end bolts.

Largest concern is that I need whatever to be able to hold up to the elements; we get road salt aplenty here. I've had some stud kits in the past (on VW/Audi) that are black-oxide coated and they rust... not good.
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.

Last edited by ZPrime; 10-30-2017 at 08:26 PM..
Appreciate 0
      10-30-2017, 09:40 PM   #5
ags28
Private
26
Rep
77
Posts

Drives: 2017 LBB M2
Join Date: Sep 2017
Location: Pasadena, CA

iTrader: (0)

studs

Hey there. I'm interested in those studs. How much do you want for them? They will bolt right on my stock M2, correct? PM me if you wish......
Appreciate 0
      11-02-2017, 02:09 PM   #6
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Quote:
Originally Posted by Opplock1 View Post
Check out Motorsport Hardware. I'm currently running their studs and lug nuts and they've been tried and true on and off track.

The specific kit you'd probably be interested ing:
https://motorsporthardware.com/produ...-14x125-14x15/

Good luck!
How does their hardware hold up to "the elements?" Have you had it in snow / salt? Any idea what the length of the stud is from the tip down to the base of the 14x1.5 threads? I have these ~2" deep closed-end nuts that I want to use, but if the stud is too long then the nut won't make it all the way down.
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      11-02-2017, 02:13 PM   #7
emdeuce
Private First Class
197
Rep
155
Posts

Drives: M2 ZL9 6MT
Join Date: Dec 2014
Location: (626)

iTrader: (0)

Quote:
Originally Posted by ZPrime View Post
Quote:
Originally Posted by Opplock1 View Post
Check out Motorsport Hardware. I'm currently running their studs and lug nuts and they've been tried and true on and off track.

The specific kit you'd probably be interested ing:
https://motorsporthardware.com/produ...-14x125-14x15/

Good luck!
How does their hardware hold up to "the elements?" Have you had it in snow / salt? Any idea what the length of the stud is from the tip down to the base of the 14x1.5 threads? I have these ~2" deep closed-end nuts that I want to use, but if the stud is too long then the nut won't make it all the way down.
These stud are definitely way too long for closed ended nuts. Maybe you can call and see if they can source studs that would suit your needs?
__________________
Living Life Turn After Turn!
[/url]
F87 M2 Performance Edition - 2017-current
F15 X5 35d - 2014-2017
E36 M3 - 2009-2016
Appreciate 0
      11-07-2017, 12:35 AM   #8
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
I've been looking around and it seems like all of the studs on the market are crazy-long, presumably to allow for thickass spacers... which I don't get, because ideally you want zero spacers on a track-day car, and track days / frequent wheel swaps are the only thing that really justifies a stud conversion at all.



I've found maybe one or two options that are shorter than 70mm overall length, but they are m14x1.25 thread which drastically limits your nut choice (and I don't own any nuts in that pitch). I have these two sets of Gorilla nuts I'd prefer to re-use that are already M14x1.5.

I contacted motorsport hardware and they didn't have any suggestions other than "use our open-end nuts." I also questioned them about the corrosion resistance of their stuff, since I've been bitten in the past with this (Apex Competition's "track" grade black-oxide studs are not all-season-ready and will rust; their silver/zinc coated stuff holds up fine though).

MH's answer about salt resistance was as follows (direct quote):
Quote:
Originally Posted by MotorsportHardware
The black zinc on the studs is pretty durable. Should be similar to OEM but Salt and Sitting snow is very hard on them. They will not rust as easily as the Black oxide but salt and road chemicals will eat through anything this. Even the finish of your original wheel hardware will not last in that environment.
I'm not sure where they got the idea I'd be leaving my wheels "sitting in salt and snow."
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.

Last edited by ZPrime; 11-07-2017 at 12:50 AM..
Appreciate 0
      11-08-2017, 09:49 AM   #9
gsrbri
Lieutenant
gsrbri's Avatar
United_States
560
Rep
570
Posts

Drives: F87 6MT
Join Date: Jul 2011
Location: Boston, MA

iTrader: (0)

MSI racing studs through Turner Motorsport - https://www.turnermotorsport.com/p-3...SABEgKpxfD_BwE
Appreciate 0
      11-08-2017, 11:00 AM   #10
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Quote:
Originally Posted by gsrbri View Post
MSI racing studs through Turner Motorsport - https://www.turnermotorsport.com/p-3...SABEgKpxfD_BwE
I saw those, e-mailed Turner a day or two ago with length questions and asking about corrosion resistance, and have not gotten any response. Not exactly confidence-inspiring. They discuss using Manganese Phosphate as the primary coating -- manganese phosphate is porous, so itself does not directly stave off corrosion. You have to oil the coating, and the oil provides the water & salt resistance... but using lube on something designed to capture a nut and hold a wheel on seems kind of unwise to me.

I also think they will be too long to be used with my ~2" deep nuts... I'm starting to think this is a lost cause, which pisses me off since I have two sets of the damn things.

Anyone know roughly how thick an average wheel is, as far as how much stud length it eats up?
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.

Last edited by ZPrime; 11-08-2017 at 11:13 AM..
Appreciate 0
      11-08-2017, 11:02 AM   #11
CommitConfirm
Lieutenant
United Kingdom
475
Rep
549
Posts

Drives: The Bus
Join Date: Oct 2016
Location: Berkshire

iTrader: (0)

Garage List
Why not just use the BMW parts from the M235i racing?

http://www.realoem.com/bmw/enUS/show...diagId=36_2018
Appreciate 0
      11-08-2017, 12:52 PM   #12
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Quote:
Originally Posted by CommitConfirm View Post
Why not just use the BMW parts from the M235i racing?

http://www.realoem.com/bmw/enUS/show...diagId=36_2018
Interesting...
Is the wheel-side of that threaded M14x1.25 though (like the hub-side)? I explicitly do not want that; I want a stud that is M14x1.5 thread pitch on the "outside," which allows for a much better nut selection. (There are very few M14x1.25 nut options on the market.)

Additionally, if it was designed for a pace car / racing application, there's a decent chance it isn't corrosion-resistant (the assumption is that the studs get replaced regularly by a maintenance/race team, so they give them temporary coatings rather than stuff designed to hold up to daily-usage).
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      11-08-2017, 01:11 PM   #13
twin fed
Doc Brown
twin fed's Avatar
1176
Rep
2,174
Posts

Drives: 2016 MG MT M2
Join Date: May 2008
Location: Isle of Long

iTrader: (2)

In the "stud" world these are actually very short and can probably be used with longer closed ended lug nuts
__________________


Appreciate 0
      11-08-2017, 03:15 PM   #14
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Quote:
Originally Posted by twin fed View Post
In the "stud" world these are actually very short and can probably be used with longer closed ended lug nuts
By "these" do you mean the BMW ones? They did look short to me from the picture.

My concern is the thread pitch on them (which isn't documented but I'm guessing is 1.25 instead of 1.5), as well as corrosion resistance...
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      11-08-2017, 03:56 PM   #15
CommitConfirm
Lieutenant
United Kingdom
475
Rep
549
Posts

Drives: The Bus
Join Date: Oct 2016
Location: Berkshire

iTrader: (0)

Garage List
Why do you want 1.5 thread, what is wrong with 1.25?
Appreciate 0
      11-08-2017, 04:15 PM   #16
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Quote:
Originally Posted by CommitConfirm View Post
Why do you want 1.5 thread, what is wrong with 1.25?
Much easier to cross thread 1.25
Almost no options for different nuts in 1.25
I already own two sets of nuts in 1.5 that would work great for my needs
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      11-09-2017, 07:42 AM   #17
twin fed
Doc Brown
twin fed's Avatar
1176
Rep
2,174
Posts

Drives: 2016 MG MT M2
Join Date: May 2008
Location: Isle of Long

iTrader: (2)

Quote:
Originally Posted by ZPrime View Post
By "these" do you mean the BMW ones? They did look short to me from the picture.

My concern is the thread pitch on them (which isn't documented but I'm guessing is 1.25 instead of 1.5), as well as corrosion resistance...
Sorry I did not specify, but I meant the ones from TireRack that I posted above that I am trying to sell.

The TPI ones seem to be extremely well made and I don't think that cross threading would be an issue. With the bullnose the initial threading of the nut to the stud is very smooth and engages nicely.
__________________



Last edited by twin fed; 11-09-2017 at 07:49 AM..
Appreciate 0
      11-13-2017, 12:47 PM   #18
CosmosMpower
Brigadier General
CosmosMpower's Avatar
2049
Rep
3,714
Posts

Drives: F87c, GT3, MK7 GTI
Join Date: Apr 2011
Location: Frisco, TX

iTrader: (1)

Don't use titanium if you do and one breaks you get to replace your wheel hub.
Appreciate 0
      11-13-2017, 08:51 PM   #19
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Quote:
Originally Posted by CosmosMpower View Post
Don't use titanium if you do and one breaks you get to replace your wheel hub.
Why would you say that?
Titanium isn't especially hard, it can be drilled out. Only reason to use titanium is weight or corrosion resistance.

I've never seen a titanium screw-in stud though, only titanium nuts.
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      11-14-2017, 10:16 AM   #20
CosmosMpower
Brigadier General
CosmosMpower's Avatar
2049
Rep
3,714
Posts

Drives: F87c, GT3, MK7 GTI
Join Date: Apr 2011
Location: Frisco, TX

iTrader: (1)

Quote:
Originally Posted by ZPrime View Post
Why would you say that?
Titanium isn't especially hard, it can be drilled out. Only reason to use titanium is weight or corrosion resistance.

I've never seen a titanium screw-in stud though, only titanium nuts.
Nope they can't be drilled out
Appreciate 0
      11-14-2017, 07:33 PM   #21
ZPrime
I INDIC8
ZPrime's Avatar
United_States
611
Rep
1,282
Posts

Drives: 2018 LBB M2, 6MT
Join Date: Dec 2016
Location: Cleveland, OH

iTrader: (0)

Garage List
2018 BMW M2  [9.50]
Standard titanium is not much harder than steel. It's a 6 on the mohs scale, steel is a 5.

You can drill out titanium, I don't know what you are talking about. You'd want a tungsten-carbide drill bit to do it, but it's certainly possible.

Completely moot point since I'm not looking for titanium anyway though.
__________________
2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice.
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.
Appreciate 0
      11-15-2017, 05:49 PM   #22
gsrbri
Lieutenant
gsrbri's Avatar
United_States
560
Rep
570
Posts

Drives: F87 6MT
Join Date: Jul 2011
Location: Boston, MA

iTrader: (0)

I'm delighted with the MSI studs/nuts. They do offer the 1.5 pitch threat for the business end. They are high strength steel and so are the nuts, but the nuts are coated. The dry lube on the studs - we shall see.

Are you going to DD the car through RE winter? The studs on my M4 made it through 3 winters w/very minimal corrosion.

I went with MSI for the M2, which is now a second track/street car that will never see winter.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 05:18 AM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST